Crank-pedal



1. GLANZ.

CRANK PEDAL.

APPLICATION msn SEPT. 3o, 191.9.

1,852,446. f Pmndsept. 14,1920.

la r9 MIUR.

TORNEY.

JOSEPH GLANZ, or HARTFORD, CONNECTICUT.rv

. CRANK-riiiniiri.y

Speciicaton'of Letters Patent. Patented Sept. 14:, 1920.

"Application filed September 30, 1919.` Serial No. 327,470.l

T 0 all w hom t may comer/a Be it known that I, JOSEPH GLANZ, a citizen `of the United States, residing in Hartford, in the county ef Hartford and State of Connecticut, have invented a new and Improved Crank-Pedal, of which the following is a specification.

.My invention relates to the class of devices employed to receive the pressure of a foot for the transmission of power' to a crank, especially 'the crank of a `bicycle or like vehicle, and an object of my invention, among others, is to reduce the cost of 1nanufacture of suoli pedals to a minimum;-and` a further object ofthe invention is to provide a construction whereby my improved pedal may be readily attached to the cranks of bicycles now in common use whether or not the thread therein has become worn.

One form of pedal embodying'my invention Vand in the construction and use of which the objects herein set out, as well as others, may be attained, isillustrated in the accompanying drawings, in which- Figure 1 is a view in central longitudinal section through a pedal embodying my invention. Y

Fig. 2 is a view in cross section'through the saine.

Fig. 3 is a detail view illustrating the method of attaching my improved device to a crank,-the thread in the opening in which has been worn. In'the accompanying drawings the numeral 5 indicates a crank or support that, in the structures now commonly used, is frequently integral with the cra-nk shaft, such shaft 6 in bicyclek construction being rotat ably mounted in the crank hanger of the bicycle in a manner that will be'readily undei-stood and for which reason a detailed illustration and description is omitted herein. It is common in the structures referred to to secure the spindle of the pedal in a screw threaded opening in the end of the crank, said spindle, of course, being threaded to fit said screw threaded opening. In use the thread in the opening in the end of the crank frequently becomes so vworn that the spindle will not beretained in place, and when such result occur s,-it is not only necessary t0 replace the injured pedal with a new one, but the entire crank shaft and two cranks must also' be replaced.

My invention illustrated and described herein obviates this objectionable feature and provides means whereby the original crank shaft and attached cranks `may be retained, thereby also reducing the labor. re-

quired to replace a pedal and aty thersaine time means are provided for quickly replacingv the pedal, the thread onthe spindle of which has been destroyed. Y

To this end my improved pedal comprises a spindle 7 upon the opposite ends of which bearing sleeves 8 9 are received, said bearing sleeves being of a length to engage comparatively short lengths of the spindle and thereby reduce the amount of contactinfr surface between the sleeve and spindle. Each of these sleeves has a head 1011, the former having a recess 12 tok receive the flange 13 of a connecting nipple 111 screw threaded onto the screw threaded` endl of the spindie '7, The opening inl the sleeve 8 is closed within the head 11, and the end of the spindie 7 is preferably located at ksome distance from the inner enely of the opening in said sleeve.

In "addition to the parts hereinbefore described, the frame of the pedal comprises end plates 16-17, the latter being a cup'- pedy end plate,'said plates being joined by rods 18, which rods have mounted upon them grips 19 of usual forml and construction. Theplate 16 is recessed` to receive the head` l0 of thebearing sleeve 9, this recess providing a. retaining flange 20 that cverlies the flange 13 on the nipple 14, whereby the end plate 16 is rotatably secured in place, and Athe'other/pedal inembers are securedv against removal to thev end .plate 16. lThe head 11v of the sleeve 8 projects through an openingy in the end plate 17, the latter being seated against a shoulder" on said head Tand being secured against said shoulder by means of the nuts on the rods 18, the grips 19 being` heldl between' the `plates y16 andl." Aninclosing sleeve 22 may be employed to retain vthe bearing sleeves 8 and 9 in spaced relation and also to inclose the spindle and said sleeve against the entrance cf dust and dirt and also to retain a lubricant therein.

In my improved pedal herein shown the spindle 7 is threaded from its inner end inwardly foradistance equal to the thickness of the crank and the length of the connecting nipple 14 and the outer endof the spin.- dle is not secured to the pedal, but the latter is free to be removed from the spindle when the nipple 14 is loosened. Such ay structure willenable this pedal to be secured to cranks in the first instance, but in case a bicycle shall be equipped in the first instance with common forms of pedals in which the spin Vin the opening in the end of the crank becomes Worn my improved pedal may be quickly attached to such crank, the other pedal being' removed, the spindle head 2l resting against one side of the crank and the connecting nipple l-/loeing secured tightly against the opposite side ci? the crank.

ln attaching my improved pedal, it the hole in the crank isk provided with a thread the spindle 7, that has been detached from the pedal, is screwed into such hole until the head 2l tightly eng: g one side oi the crank. The pedal is then placed upon tls; opposite end of said spindle, the nipple 14 is engaged with 'the screw thread 'l5 and screwed tightly up against the opposite face of the crank, the nipple being of angular shape to receive a wrench as a means for turning` it. In case the thread on 'the opening in the end olZ the crank has become .vorn sulliciently, the spindle is simply inserted through such opening and the nipple screwed to place as before described.

.lt will be noted that important iler ture of my invention resides in the spindle T lhaving the head 2l. by means of Which spindle the pedal is rotatably supported and which pedal is freely removable intact andas a unit from said spindle support. l contemplate as Within my inrention any means tor securing the pedal for su, port by this spindle so long as my improved means herein illustrated and described are employed for holding the 'spindle in place.

In accordance with the provisions of the patent statutes, l have described the principles oi operation of my invention, together With the device which I now consider to represent the best embodiment thereof; but I desire to have it understood that the de vice shown is only illustrative, and that the invention 'may be carried out by other means.

I claiml. A pedal structure comprising a pedal supporting spindle, a bearing rotatable on said spindle, a pedal iframe supported on said bearing, and means independent oit the pedal Ytrame detachably engaging said spindle to secure it in place and loosely en. gaging said pedal frame to rotatably retain it on the spindle.

2. A pedal structure comprising a headed pedal supporting spindle, means coperating with the spindle head to secure said spindle in an opening in a support, and a pedal trame independent of said means mounted on said sniudle and rotatably retained thereon by engagement With said means,

3. A pedal structure `comprising a headed spindle with a thread thereon at a distance from said head, a pedal frame rotatably mounted on said spindle, and means independent ot the mounting et' the pedal frame engaging said thread to clamp the spindle head against a support, said pedal frame bong rotatably interloeled with said means and retained on the spindle thereby.

et. A pedal structure comprising a spindle, means for securing said spindle to a support, a pedal frame mounted on said spindle and freely detachable therefrom at the outer end thereof, said pedal having recess, an annular part or each securing means including a member having a flange extending into said annular recess vto retain the pedal in place, said member being se cured to said spindle.

A pedal structure comprising a headed spindle having a thread at a distance from said head, pedal frame mounted on said spindle and freely detachable .therefrom at the outer end thereof, said kpedal having a flanged recess, and a member having a flange located in said recess to retain said frame in place, saidmember fitting said screuT thread to press said head against a support.

6. A pedal comprising a frame including end pieces, means for connecting said end pieces, bearing sleeves supporting said end pieces and spaced apart, a spindle extending through one ot said sleeves and into the oppositesleeve, said slee-ves comprising the bearing for vsaid pedal, the latter being `freely detachable vfrom said spindle at the outer end thereof, means for retaining said sleeves in spaced relation, and a member secured a threaded portion ot' said spindle and ro 'atably engaging said frame to hold it in T. A pedal structure comprising a spindle, a pedal frame mounted on said spindle, and means rotatably carried by the pedal frame for securing said frame to the spindle, said means being operable independently of the pedal frame and movable therewith longitudinally oli the spindle to remove the pedal frame intact from the spindle.

8. A pedal structure having an opening extending inivardly from one end thereof, a spindle freely movable into said opening and unsecured to the pedal at its outer end, means for securing the pedal at the inner end of the spindle, and means coperating with the pedal securing means for securing said spindle to a support.

9. A pedal having an opening extending inwardly from. one end thereof, a spindle Afreely movable into said opening and -unsecured to the pedal at its outer end, and means rotatably carried by the pedal for securing the pedal at the inner end of the spindle and for securing said spindle to a support.

JOSEPH GLANZ. 

